Java Iterator from getDestinationType(ImageReadParam param, Iterator imageTypes)

Description

Gets the destination image type.

License

Open Source License

Declaration

public static final ImageTypeSpecifier getDestinationType(ImageReadParam param, Iterator imageTypes)
        throws IIOException 

Method Source Code

//package com.java2s;
/*//from  ww  w  .  j ava 2  s .  c o m
 * $RCSfile: ImageUtil.java,v $
 *
 * 
 * Copyright (c) 2005 Sun Microsystems, Inc. All  Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met: 
 * 
 * - Redistribution of source code must retain the above copyright 
 *   notice, this  list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in 
 *   the documentation and/or other materials provided with the
 *   distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of 
 * contributors may be used to endorse or promote products derived 
 * from this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any 
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND 
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL 
 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF 
 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR 
 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES. 
 * 
 * You acknowledge that this software is not designed or intended for 
 * use in the design, construction, operation or maintenance of any 
 * nuclear facility. 
 *
 * $Revision: 1.7 $
 * $Date: 2007/08/28 18:45:06 $
 * $State: Exp $
 */

import java.util.Iterator;

import javax.imageio.ImageReadParam;

import javax.imageio.IIOException;
import javax.imageio.ImageTypeSpecifier;

public class Main {
    /**
     * Gets the destination image type.
     */
    // NOTE: Code shamelessly copied from ImageReader.getDestination().
    public static final ImageTypeSpecifier getDestinationType(ImageReadParam param, Iterator imageTypes)
            throws IIOException {

        if (imageTypes == null || !imageTypes.hasNext()) {
            throw new IllegalArgumentException("imageTypes null or empty!");
        }

        ImageTypeSpecifier imageType = null;

        // If param is non-null, use it
        if (param != null) {
            imageType = param.getDestinationType();
        }

        // No info from param, use fallback image type
        if (imageType == null) {
            Object o = imageTypes.next();
            if (!(o instanceof ImageTypeSpecifier)) {
                throw new IllegalArgumentException("Non-ImageTypeSpecifier retrieved from imageTypes!");
            }
            imageType = (ImageTypeSpecifier) o;
        } else {
            boolean foundIt = false;
            while (imageTypes.hasNext()) {
                ImageTypeSpecifier type = (ImageTypeSpecifier) imageTypes.next();
                if (type.equals(imageType)) {
                    foundIt = true;
                    break;
                }
            }

            if (!foundIt) {
                throw new IIOException("Destination type from ImageReadParam does not match!");
            }
        }

        return imageType;
    }
}

Related

1. createIterable(final Iterator src)
2. get(Iterator iterator, int position)
3. getAll(Iterator it)
4. getAt(Iterator it, int pos)
5. getCommaSeparatedValue(Iterator it)
6. getEmptyIterator()
7. getEnumeratedObjectCount(Iterator objects)
8. getFirstChildrendIterator(List children)
9. getIndexInIterator(Iterator iterator, int index)